4820-00-984-1958

Find complete technical information, availability, and procurement data for: 4820-00-984-1958
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-984-1958

Item Name Code

05488

Assigment Date

01/01/1960 (66 years ago)

A piece of transparent material specifically designed to be placed directly in front of a dial or scale to protect it from foreign matter. It is cut to size and may include a frame. It may have an index line or other marking. See also window, observation; and dial, scale.

right-hand 1st end thread direction, poppet flow control device, 0.125 inches 1st end nominal pipe size accommodated, 205.0 fahrenheit single response maximum operating temp, spring disk loading method

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Nominal Pipe Size Accommodated: 0.125 inches 1st end
Thread Direction: right-hand 1st end
Flow Control Device: poppet
Disk Loading Method: spring
Maximum Operating Temp: 205.0 fahrenheit single response
Connection Style: plain (pipe) 1st end
Valve Operation Method: automatic
Connection Type: threaded external pipe 1st end
Features Provided: pressure tight outlet side
Thread Quantity Per Inch: 27 1st end
Nominal Thread Size: 0.125 inches 1st end
Opening Pressure Setting: 17.0 pounds per square inch
Material: aluminum alloy 2024 body
Material: aluminum alloy 2024 seat
Material Document And Classification: qq-a-225/6,alloy2024,t4 fed spec single material response body
Material Document And Classification: qq-a-225/6,alloy2024,t4 fed spec single material response seat
Surface Treatment: anodize
Surface Treatment Document And Classification: mil-a-8625,ty 1 mil spec single treatment response
Style Designator: straight thru
Thread Series Designator: npt 1st end

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
232-001-0002	Safety Relief Valve
524A1M17	Safety Relief Valve

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 4820-00-984-1958?

The FSCG of the NSN 4820-00-984-1958 is 4820

Does the NSN 4820-00-984-1958 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-984-1958 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 4820-00-984-1958 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-984-1958 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 4820-00-984-1958 was assigned to the Federal Catalog?

It was assigned 66 years ago, on Fri, Jan 1, 1960